(19)

(11)

EP 0 371 988 A1

(12)

(43) Date of publication: 13.06.1990 Bulletin 1990/24 (21) Application number: 88906458.0 (22) Date of filing: 24.06.1988

(51) International Patent Classification (IPC):  B05B 7/ 22( . ) C23C 4/ 12( . ) (86) International application number: PCT/US1988/002140 (87) International publication number: WO 1988/010168 (29.12.1988 Gazette 1988/28)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 25.06.1987 US 19870066173 (71) Applicant: CALL, Douglas Jr. Newport News, VA 23606 (US)	(72) Inventor: FOX, Thomas J. Virginia Beach, VA 23454 (US) (74) Representative: Herrmann-Trentepohl, Werner, Dipl.-Ing.  Patentanwälte Herrmann-Trentepohl, Kirschner, Grosse, Bockhorni & Partner Forstenrieder Allee 59 D-81476 München D-81476 München (DE)